My great uncle was Joseph Kowalewski, born 1891in Rudnya, Belarussia. That is between Vilnus and Minsk. Joseph was buried at Notre Dame Cemetery in Worcester, Ma. May 11, 1919. I just recently received church records that Joseph had died in Chicago, Illinois on April 27th 1919. He had a wife by the name of Anna. My grandfather John buried his brother in Worcester. I reviewed 1920 census for Chicago and came across a Anna Kowalewski and two children Paul and Anne Kowalewski. I don't know if this will help you. Also I have some pictures of Joseph in a World War 1 uniform. Joseph had other siblings: John (my grandfather), Frank, and Anna.